Alert archive / California / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 21, NWS San Diego, CA
NWS San Diego, CA issued this severe thunderstorm warning at Sep 7, 2013, 1:10 PM PDT for San Diego County, California. It was in force for 65 min. 5 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 7, 2013, 1:10 PM PDT (20:10 UTC)
- Expired
- Sep 7, 2013, 2:15 PM PDT
- In force
- 65 min
- Issued by
- NWS San Diego, CA
- Area
- Storm-based polygon
County San Diego County, CA
The radar
The San Diego radar (KNKX), 54 km from the middle of the area, began a volume at 20:13 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 7, 1:40 PM PDT | TSTM WND GST 56 | 12 Nnw Julian, CA | MESONET STATION MATAGUAY /MGYSD/ |
| Sep 7, 1:40 PM PDT | TSTM WND GST 56 | 12 Nnw Julian, CA | REPORTED BY MESONET STATION MATAGUAY /MGYSD/ |
| Sep 7, 1:40 PM PDT | NON-TSTM WND GST 56 | 12 Nnw Julian, CA | REPORTED BY MESONET STATION MATAGUAY /MGYSD/ |
| Sep 7, 1:45 PM PDT | HAIL 0.25 | 18 Ene Valley Center, CA | PUBLIC REPORT OF PEA SIZE HAIL |
| Sep 7, 2:15 PM PDT | TSTM WND DMG | 13 Nnw Julian, CA | LARGE TREE LIMB BROKEN AND LAYING BY HIGHWAY 79 |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
San Diego, CA (KNKX), launched 12:00Z, 8.2 hours before the alert went out and 74 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 12 J/kg
- Mixed-layer CIN
- -490 J/kg
- Mixed-layer LCL
- 2438 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
131 WUUS56 KSGX 072010 SVRSGX CAC073-072115- /O.NEW.KSGX.SV.W.0021.130907T2010Z-130907T2115Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SAN DIEGO CA 110 PM PDT SAT SEP 7 2013 THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTH CENTRAL SAN DIEGO COUNTY IN SOUTHWEST CALIFORNIA... * UNTIL 215 PM PDT * AT 105 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED NEAR WARNER SPRINGS...OR 17 MILES WEST OF BORREGO SPRINGS. THIS STORM WAS NEARLY STATIONARY AND THEREFORE CAPABLE OF PRODUCING FLASH FLOODING. * THE SEVERE THUNDERSTORM WILL BE NEAR... WARNER SPRINGS BY 210 PM PDT... 7 MILES NORTHEAST OF LAKE HENSHAW BY 215 PM PDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL WEATHER SERVICE SAN DIEGO TWITTER AND FACEBOOK PAGES. && LAT...LON 3317 11666 3330 11686 3343 11670 3339 11645 TIME...MOT...LOC 2009Z 041DEG 2KT 3333 11664 $$ JT
2 follow-up statements
561 WWUS56 KSGX 072040 SVSSGX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN DIEGO CA 140 PM PDT SAT SEP 7 2013 CAC073-072115- /O.CON.KSGX.SV.W.0021.000000T0000Z-130907T2115Z/ SAN DIEGO CA- 140 PM PDT SAT SEP 7 2013 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM PDT FOR NORTH CENTRAL SAN DIEGO COUNTY... AT 140 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR WARNER SPRINGS...OR 18 MILES WEST OF BORREGO SPRINGS. THIS STORM WAS NEARLY STATIONARY. A WIND GUST OF 40 MPH WAS REPORTED AT MATAGUAY SOUTH OF WARNER SPRINGS. STRONGER OUTFLOW WINDS ARE EXPECTED AROUND THE AREA THROUGH 215 PM PDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL WEATHER SERVICE SAN DIEGO TWITTER AND FACEBOOK PAGES. && LAT...LON 3317 11666 3330 11686 3343 11670 3339 11645 TIME...MOT...LOC 2034Z 041DEG 2KT 3332 11665 $$ JT
162 WWUS56 KSGX 072114 SVSSGX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN DIEGO CA 214 PM PDT SAT SEP 7 2013 CAC073-072118- /O.EXP.KSGX.SV.W.0021.000000T0000Z-130907T2115Z/ SAN DIEGO CA- 214 PM PDT SAT SEP 7 2013 ...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL SAN DIEGO COUNTY WILL EXPIRE AT 215 PM PDT... THUNDERSTORMS REMAIN IN THE AREA BETWEEN PALOMAR MOUNTAIN...LAKE HENSHAW...AND WARNER SPRINGS. HOWEVER...THESE STORMS LOOK TO HAVE WEAKENED AND THEREFORE THE SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE. LIGHTNING...SMALL HAIL...AND WIND GUSTS TO 50 MPH STILL REMAIN POSSIBLE OVER THE NEXT HOUR. PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL WEATHER SERVICE SAN DIEGO TWITTER AND FACEBOOK PAGES. LAT...LON 3317 11666 3330 11686 3343 11670 3339 11645 TIME...MOT...LOC 2108Z 041DEG 2KT 3331 11666 $$ JT
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 5:26 AM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 15 hr |
| Sep 7, 12:27 PM PDT | Flash Flood Warning | SGX | Riverside, San Diego | 3 hr |
| Sep 7, 12:29 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 46 min |
| Sep 7, 12:42 PM PDT | Flash Flood Warning | SGX | San Bernardino | 3 hr |
| Sep 7, 1:01 PM PDT | Areal Flood Advisory | SGX | San Diego | 5 hr |
| Sep 7, 1:29 PM PDT | Flash Flood Warning | SGX | Riverside, San Bernardino | 3 hr |
| Sep 7, 2:00 PM PDT | Areal Flood Advisory | SGX | San Diego | 3 hr |
| Sep 7, 2:07 PM PDT | Areal Flood Advisory | SGX | Riverside, San Bernardino | 3 hr |
| Sep 7, 2:16 PM PDT | Flash Flood Warning | SGX | San Bernardino | 3 hr |
| Sep 7, 2:32 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 58 min |
| Sep 7, 2:49 PM PDT | Flash Flood Warning | SGX | Riverside, San Bernardino | 3 hr |
| Sep 7, 2:56 PM PDT | Special Weather Statement | SGX | 49 min | |
| Sep 7, 3:12 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 63 min |
| Sep 7, 3:29 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 61 min |
| Sep 7, 3:30 PM PDT | Special Weather Statement | SGX | 15 min | |
| Sep 7, 3:38 PM PDT | Areal Flood Advisory | SGX | Riverside, San Diego | 3 hr |
| Sep 7, 3:45 PM PDT | Flash Flood Warning | SGX | San Diego | 3 hr |
| Sep 7, 3:46 PM PDT | Flash Flood Warning | SGX | Riverside | 3 hr |
| Sep 7, 4:27 PM PDT | Special Weather Statement | SGX | San Diego | 93 min |
| Sep 7, 4:37 PM PDT | Special Weather Statement | SGX | San Diego | 83 min |
| Sep 7, 4:44 PM PDT | Areal Flood Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 91 min |
Nearby
Severe Thunderstorm Warnings in California, 2013Every severe thunderstorm warning in 2013
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.